Discovered in 1947, the Lambda particle was predicted to have a life of only 10-23 seconds. Experimentally, it was found to live for 10-10 seconds. Physicists described this property as "strangeness", and this ultimately led to the discovery of the strange quark. After this, the charm and bottom lambdas were discovered. Though predicted by the Standard Model, it is unlikely that the top lambda will be found due to the instability of the top quark.